Reduction-furnace.



' No. 866,323. PATENTED sEPT.-17, 190.7.

R. L. BAUMLINE. REDUCTION FURNACE.

AIPLIGATION FILED JULY 30. 1906.

RIOHARD L. BAUMLINE, OF AUBURN, NEW YORK.

REDUCTION-FURNACE Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed July 30,1906. Serial No. 328,374,

To all whom it may concern:

Be it known that I, RICHARD L. BAUMLINE, a citizen of the United States,residing at Auburn, in the county of Cayuga and State of New York, haveinvented a certain new and useful Improvement in Reduction-Fun naces, ofwhich the following is a specification.

My invention relates to that class of furnaces used in extracting metalsfrom ores, or reducing metals to a molten state, or in the incinerationof waste or garbage.

The object of my invention is the construction of a furnace to securethe most effective results with an economy of fuel and simplicity ofoperation, as will be hereinafter explained.

Referring to the drawings in which similar letters indicatecorresponding parts, Figure 1 is a longitudinal vertical section of'myimproved furnace, and Fig. 2 is a section on the line x-x of Fig. 1.

The combustion chamber A and the stack B are constructed of fire brick,or other suitable material, and are inclosed in a casing 1) preferablyof boiler iron; a wall a separates the lower part of the stack B fromthe combustion chamber A, and has an opening I) therein of sufficientproportion to guarantee the best results of the reducing flame upon theores or metals to be melted.

Within the stack B is a receiving chamber G formed of a fire resistingmaterial such as plumbago. 1 construct the receiving chamber 0 insections as shown, one section fitting within the other in a mannercommon to piping, presenting a continuous smooth inner surface; theflanges c of the sections resting upon supports 0 from the wall of thestack B and holding the receiving chamber 0 substantially centraltherein to insure an even distribution of heat in the space between thereceiving chamber 0 and the inner walls of the stack B. The supports 0are shown as integral with the fire brick of the stack B, a constructionto which I do not confine myself as it is obvious other means ofsupporting the receiving chamber may beemployed.

A hopper E rests in the top of the stack B and the receiving chamber 0.The lower end of the receiving chamber 0 extends but a short distancebelow the top of the opening I) and sufiiciently above the inclinedhearth F to allow of a sufficient accumulation of ore thereon to beacted upon by the reducing flame.

My furnace is constructed to use liquid fuel, but I do not show ordescribe the particular form of liquid fuel burner employed, as numeroustypes of such burners are available for my purposes, and do not formpart of my invention. A pipe a, from any suitable burner that may beemployed, projects into the combustion chamber A through an opening a inthe wall thereof. An opening b, for purposes of observation, is providedin the wall of the combustion chamber A just above the opening (1 Iprovide an opening b in the side of the combustion chamber A for thepurpose of removing slag, or otherwise agitating the molten contents ofthe furnace. 1

In operation, the material to be reduced is dumped into the hopper untilthe receiving chamber 0 is full, and consequently a sufficient quantityis resting upon the inclined hearth F; the fuel is then turned on andignited at the end of the pipe (1, the flame, as shown by dotted linesin Fig. 1, playing upon the ore or metal resting upon the hearth Fbeneath the lower end of the receiving chamber 0, reducing it to amolten state so that it will collect in the bottom of the combustionchamber A from which it can be drawn into crucibles through a sprueopening 1- as shown. The accumulated heat in the space surrounding thereceiving chamber 0, and the heat which will naturally rise within thereceiving chamber itself, will tend to heat and soften the ore or metalso that when the latter reaches the hearth and is met by the reducingflame it will be more quickly brought to a fluid or molten state.$uitable openings 2 and 3, with closures therefor as shown in dottedlines, may be provided in the stack B to regulate the heat between thereceiving chamber and the inner wall of the stack.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is-

In a reduction furnace, the combination with a combus tion chamber and astack connected therewith, the bottom of said combustion chamberextending beneath said stack, of a receiving chamber located within thesaid stack with a space around it for the passage of products ofcombustion around it, the lower end of said receiving chamber being ashort distance above the bottom of'the combustion chamber, and a burnerwithin the combustion chamber directing its flame upon the space betweenthe receiving chamber and the bottom of the combustion chamber,substantially as described.

In testimony whereof I hereunto set my hand this 27th day of July 1906,in the presence of two attesting" Witnesses.

RICHARD L. BAUMLINE.

Witnesses:

EVA M. Srour, L. EUGENE TANNER.

